The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2011
Filed:
Sep. 02, 2008
Raymond V. Nold, Iii, Beasley, TX (US);
Alexander F. Zazovsky, Houston, TX (US);
Nathan Landsiedel, Houston, TX (US);
Nicholas Ellson, Houston, TX (US);
Vladimir Vaynshteyn, Sugar Land, TX (US);
Raymond V. Nold, III, Beasley, TX (US);
Alexander F. Zazovsky, Houston, TX (US);
Nathan Landsiedel, Houston, TX (US);
Nicholas Ellson, Houston, TX (US);
Vladimir Vaynshteyn, Sugar Land, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Example methods and apparatus to perform pressure testing of geological formations are disclosed. A disclosed example method comprises positioning a testing tool in a wellbore formed in the geological formation, sealing a sample interval around the testing tool, sealing a first guard interval around the testing tool and adjacent to the sample interval, reducing a first pressure in the sample interval, reducing a second pressure in the first guard interval, maintaining a volume of a first chamber fluidly coupled to the sample interval during a time interval, and measuring a plurality of pressure data for a fluid captured in the first chamber during the time interval.